high zddp in small engine oil?

[jeepman3071]

Oils today are better than 10 or even 5 years ago. Modern passenger car oils have to withstand high heat, fuel dilution, turbo charging, and other factors. ZDDP is one additive, it caused damage to cat convertors so it was removed in favor of other additives and technology. The manufacturers don't just make their product less effective because one additive must be removed.

 

[The motor guy]

Oils today are better than 10 or even 5 years ago. Modern passenger car oils have to withstand high heat, fuel dilution, turbo charging, and other factors. ZDDP is one additive, it caused damage to cat convertors so it was removed in favor of other additives and technology. The manufacturers don't just make their product less effective because one additive must be removed.

Fair enough. So can you now use this oil in a muscle car from the 70s?

 

[jeepman3071]

Fair enough. So can you now use this oil in a muscle car from the 70s?

Unless it's a brand new engine where the cam hasn't been broken-in yet, I would run it.

 

[Rygrego]

I thought zddp isn't needed in outdoor power equipment? Like you can use sn rated oils with no issues, yet I go to a place like tractor supply that sells ope oils and it's all older SJ and SL rated oils? I mean the bottles don't have the api donut, but they're still claiming it's SL rated or SJ rated depending on which one you get. I got a few quarts of toro brand 10w30 oil and it said it was SL

No issue at all.

 

[ka9mnx]

You still have gears and need anti wear additives that control things like piston scuffing. Zddp was just a cheap and effect additive back in the day. Not everyone trusts the new stuff and frankly it hasn't been around long enough to prove of its probablamatic? What about my cummins? It has high valve train pressures and they still shoved low zddp oils down our throats in the diesel world.

My '93 flat tappet 4.0L F150 has lived happily with modern oil for the past 21 years I've owned it. Also, it has steel timing gears and a gear driven distributor.

 

[MolaKule]

You still have gears and need anti wear additives that control things like piston scuffing. Zddp was just a cheap and effect additive back in the day. Not everyone trusts the new stuff and frankly it hasn't been around long enough to prove of its probablamatic? What about my cummins? It has high valve train pressures and they still shoved low zddp oils down our throats in the diesel world.

Do you ever stick to the main topic you began? OPE to muscle cars now to Cummins?

What makes you think ZDDP chemistry is the only anti-wear compound contained in formulated engine oils?

 

[ka9mnx]

Do you ever stick to the main topic you began? OPE to muscle cars now to Cummins?

What makes you think ZDDP chemistry is the only anti-wear compound contained in formulated engine oils?

He's all over the place...

 

[The motor guy]

He's all over the place...

What I was getting at is how did all this start? I guess when they started slowly removing the additives years ago flat cams were a fairly common issue in older vehicles, now I guess technology has caught up and it's not an issue anymore?

 

[kschachn]

What I was getting at is how did all this start? I guess when they started slowly removing the additives years ago flat cams were a fairly common issue in older vehicles, now I guess technology has caught up and it's not an issue anymore?

Which is not true, they didn’t remove the additives. How many times are you going to ask that?

Like I mentioned it would help if you took the time to read and understand some of the background here.

 

[jeepman3071]

Which is not true, they didn’t remove the additives. How many times are you going to ask that?

Like I mentioned it would help if you took the time to read and understand some of the background here.

+1

They didn't remove additives from oil, they simply phased some additives out in favor of others in order to not harm emissions equipment. Oils today are better than they have ever been.

 

[userfriendly]

Is it not needed on engines with high valve spring pressures once broke in?

Define high valve spring pressure.

 

[jeepman3071]

Define high valve spring pressure.

A Jeep 4.0L engine that has been bored out to a 4.6L stroker with an aggressive cam and heavy duty valve springs would be an example of a flat tappet engine with higher valve spring pressure. Same would be the case on an older American V8 with high performance parts installed.

 

[Johnny248]

Someone gave me 14 qts of VR1 5w30 because they purchased the incorrect oil and could not return it. This stuff is feeding all of my Honda OPE.

 

[The motor guy]

Do you ever stick to the main topic you began? OPE to muscle cars now to Cummins?

What makes you think ZDDP chemistry is the only anti-wear compound contained in formulated engine oils?

No, I'm fairly scatter brained these days. Sorry. I don't think anyone stays on topic on any of these threads to be fair

 

[userfriendly]

No, I'm fairly scatter brained these days. Sorry. I don't think anyone stays on topic on any of these threads to be fair

Normal is a setting on the dryer.

 

[repairman54]

Define high valve spring pressure.

OPE engine valve springs can be depressed / opened by hand unlike automotive or larger displacement engines that have way heavier springs. Heavy flat tappet cam wear is not a big issue in OPE.

 

[Cherrybomb]

So what is the correct answer?It seems this thread was all over the place!!!!!

 

[The motor guy]

So what is the correct answer?It seems this thread was all over the place!!!!!

Sounds like you can use the latest sp rated oil even for break in

 

[The motor guy]

My new kohler cv224 is a 9.2 compression ratio though. I tought you needed more zddp for that kind of compression. Not super high compression, but higher

 

[eljefino]

My new kohler cv224 is a 9.2 compression ratio though. I tought you needed more zddp for that kind of compression. Not super high compression, but higher

Cylinder compression has nothing to do with pressure against the cam/ lifters/ pushrods/ valves.